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[ALSA] powermac - Use platform_device

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Modules: PPC,PPC PMAC driver,PPC PowerMac driver

Rewrite the probe/remove with platform_device.
Move the PM support to platform_device's callbacks.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-11-17 17:17:08 +01:00 committed by Jaroslav Kysela
parent e4f163d960
commit 5e12bea083
4 changed files with 62 additions and 90 deletions
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1
sound/ppc/Kconfig
View File

@ -13,7 +13,6 @@ config SND_POWERMAC
tristate "PowerMac (AWACS, DACA, Burgundy, Tumbler, Keywest)"
depends on SND && I2C && INPUT && PPC_PMAC
select SND_PCM
select SND_GENERIC_DRIVER
help
Say Y here to include support for the integrated sound device.

79
sound/ppc/pmac.c
View File

@ -36,14 +36,6 @@
#include <asm/pci-bridge.h>
#ifdef CONFIG_PM
static int snd_pmac_register_sleep_notifier(struct snd_pmac *chip);
static int snd_pmac_unregister_sleep_notifier(struct snd_pmac *chip);
static int snd_pmac_suspend(struct snd_card *card, pm_message_t state);
static int snd_pmac_resume(struct snd_card *card);
#endif
/* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */
static int awacs_freqs[8] = {
44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
@ -784,9 +776,6 @@ static int snd_pmac_free(struct snd_pmac *chip)
}
snd_pmac_sound_feature(chip, 0);
#ifdef CONFIG_PM
snd_pmac_unregister_sleep_notifier(chip);
#endif
/* clean up mixer if any */
if (chip->mixer_free)
@ -1298,12 +1287,6 @@ int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
/* Reset dbdma channels */
snd_pmac_dbdma_reset(chip);
#ifdef CONFIG_PM
/* add sleep notifier */
if (! snd_pmac_register_sleep_notifier(chip))
snd_card_set_pm_callback(chip->card, snd_pmac_suspend, snd_pmac_resume, chip);
#endif
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
goto __error;
@ -1328,11 +1311,11 @@ int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
* Save state when going to sleep, restore it afterwards.
*/
static int snd_pmac_suspend(struct snd_card *card, pm_message_t state)
void snd_pmac_suspend(struct snd_pmac *chip)
{
struct snd_pmac *chip = card->pm_private_data;
unsigned long flags;
snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
if (chip->suspend)
chip->suspend(chip);
snd_pcm_suspend_all(chip->pcm);
@ -1346,22 +1329,18 @@ static int snd_pmac_suspend(struct snd_card *card, pm_message_t state)
if (chip->rx_irq >= 0)
disable_irq(chip->rx_irq);
snd_pmac_sound_feature(chip, 0);
return 0;
}
static int snd_pmac_resume(struct snd_card *card)
void snd_pmac_resume(struct snd_pmac *chip)
{
struct snd_pmac *chip = card->pm_private_data;
snd_pmac_sound_feature(chip, 1);
if (chip->resume)
chip->resume(chip);
/* enable CD sound input */
if (chip->macio_base && chip->is_pbook_G3) {
if (chip->macio_base && chip->is_pbook_G3)
out_8(chip->macio_base + 0x37, 3);
} else if (chip->is_pbook_3400) {
else if (chip->is_pbook_3400)
in_8(chip->latch_base + 0x190);
}
snd_pmac_pcm_set_format(chip);
@ -1372,53 +1351,7 @@ static int snd_pmac_resume(struct snd_card *card)
if (chip->rx_irq >= 0)
enable_irq(chip->rx_irq);
return 0;
}
/* the chip is stored statically by snd_pmac_register_sleep_notifier
* because we can't have any private data for notify callback.
*/
static struct snd_pmac *sleeping_pmac = NULL;
static int snd_pmac_sleep_notify(struct pmu_sleep_notifier *self, int when)
{
struct snd_pmac *chip;
chip = sleeping_pmac;
if (! chip)
return 0;
switch (when) {
case PBOOK_SLEEP_NOW:
snd_pmac_suspend(chip->card, PMSG_SUSPEND);
break;
case PBOOK_WAKE:
snd_pmac_resume(chip->card);
break;
}
return PBOOK_SLEEP_OK;
}
static struct pmu_sleep_notifier snd_pmac_sleep_notifier = {
snd_pmac_sleep_notify, SLEEP_LEVEL_SOUND,
};
static int __init snd_pmac_register_sleep_notifier(struct snd_pmac *chip)
{
/* should be protected here.. */
snd_assert(! sleeping_pmac, return -EBUSY);
sleeping_pmac = chip;
pmu_register_sleep_notifier(&snd_pmac_sleep_notifier);
return 0;
}
static int snd_pmac_unregister_sleep_notifier(struct snd_pmac *chip)
{
/* should be protected here.. */
snd_assert(sleeping_pmac == chip, return -ENODEV);
pmu_unregister_sleep_notifier(&snd_pmac_sleep_notifier);
sleeping_pmac = NULL;
return 0;
snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
}
#endif /* CONFIG_PM */

5
sound/ppc/pmac.h
View File

@ -176,6 +176,11 @@ unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec,
void snd_pmac_beep_dma_start(struct snd_pmac *chip, int bytes, unsigned long addr, int speed);
void snd_pmac_beep_dma_stop(struct snd_pmac *chip);
#ifdef CONFIG_PM
void snd_pmac_suspend(struct snd_pmac *chip);
void snd_pmac_resume(struct snd_pmac *chip);
#endif
/* initialize mixer */
int snd_pmac_awacs_init(struct snd_pmac *chip);
int snd_pmac_burgundy_init(struct snd_pmac *chip);

67
sound/ppc/powermac.c
View File

@ -20,6 +20,8 @@
#include <sound/driver.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/initval.h>
@ -46,15 +48,9 @@ MODULE_PARM_DESC(enable_beep, "Enable beep using PCM.");
/*
* card entry
*/
static struct snd_card *snd_pmac_card = NULL;
/*
*/
static int __init snd_pmac_probe(void)
static int __init snd_pmac_probe(struct platform_device *devptr)
{
struct snd_card *card;
struct snd_pmac *chip;
@ -67,6 +63,7 @@ static int __init snd_pmac_probe(void)
if ((err = snd_pmac_new(card, &chip)) < 0)
goto __error;
card->private_data = chip;
switch (chip->model) {
case PMAC_BURGUNDY:
@ -131,13 +128,12 @@ static int __init snd_pmac_probe(void)
if (enable_beep)
snd_pmac_attach_beep(chip);
if ((err = snd_card_set_generic_dev(card)) < 0)
goto __error;
snd_card_set_dev(card, &devptr->dev);
if ((err = snd_card_register(card)) < 0)
goto __error;
snd_pmac_card = card;
platform_set_drvdata(devptr, card);
return 0;
__error:
@ -146,23 +142,62 @@ __error:
}
/*
* MODULE stuff
*/
static int __devexit snd_pmac_remove(struct platform_device *devptr)
{
snd_card_free(platform_get_drvdata(devptr));
platform_set_drvdata(devptr, NULL);
return 0;
}
#ifdef CONFIG_PM
static int snd_pmac_driver_suspend(struct platform_device *devptr, pm_message_t state)
{
struct snd_card *card = platform_get_drvdata(devptr);
snd_pmac_suspend(card->private_data);
return 0;
}
static int snd_pmac_driver_resume(struct platform_device *devptr)
{
struct snd_card *card = platform_get_drvdata(devptr);
snd_pmac_resume(card->private_data);
return 0;
}
#endif
#define SND_PMAC_DRIVER "snd_powermac"
static struct platform_driver snd_pmac_driver = {
.probe = snd_pmac_probe,
.remove = __devexit_p(snd_pmac_remove),
#ifdef CONFIG_PM
.suspend = snd_pmac_driver_suspend,
.resume = snd_pmac_driver_resume,
#endif
.driver = {
.name = SND_PMAC_DRIVER
},
};
static int __init alsa_card_pmac_init(void)
{
int err;
if ((err = snd_pmac_probe()) < 0)
struct platform_device *device;
if ((err = platform_driver_register(&snd_pmac_driver)) < 0)
return err;
device = platform_device_register_simple(SND_PMAC_DRIVER, -1, NULL, 0);
if (IS_ERR(device)) {
platform_driver_unregister(&snd_pmac_driver);
return PTR_ERR(device);
}
return 0;
}
static void __exit alsa_card_pmac_exit(void)
{
if (snd_pmac_card)
snd_card_free(snd_pmac_card);
platform_driver_unregister(&snd_pmac_driver);
}
module_init(alsa_card_pmac_init)